7. The temperature in Copenhagen is -9 °C. Draw an arrow pointing to -9 °C on this number line.
-10
0
10
The temperature in Manchester is 3 °C.
Find the temperature difference between Manchester and Copenhagen.
Use the number line to help you.

Here is the answer, note that I made this on my laptop, and the bigger line is where -9 is

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1